On the heals of their 200th episode last week and the finale of the ninth season (by Syfy reckoning) just tonight, Syfy has announced it has picked up a 13-episode 10th season of the hit paranormal investigation series Ghost Hunters to air in 2015. At he same time they announced a fourth season of 13 episodes of fellow paranormal series Paranormal Witness.

“We couldn’t be more excited about entering a brand new decade of paranormal investigations with Jason Hawes, a refreshed TAPS team and Ghost Hunters,” said Heather Olander, SVP, alternative series development and production for Syfy. “We also eagerly anticipate the return of a revitalized and scarier than ever Paranormal Witness: True Terror, which features shocking firsthand accounts of truly frightening and skin-crawling supernatural experiences – including the real-life story of the hit movie, The Conjuring.”

To date, Season 9 of Ghost Hunters has averaged 1.7 million total viewers, 841,000 viewers in Adults 18-49 and 983,000 viewers in Adults 25-54 (all data Live +7). The two-hour, 200th reunion episode, which aired October 22, was watched by 1.3 million total viewers and was the #1 unscripted show of the night among Adults 18-49 and Adults 25-54 (all data Live +SD).

As a highlight of Syfy’s annual 31 Days of Halloween programming, the Ghost Hunters season finale (airing Tonight – Wednesday, October 29 at 9PM ET/PT) features a special Halloween investigation at the Cincinnati Music Hall in Ohio, where reported hauntings are as frequent as the performances. With paranormal activity said to spike at 3AM, the TAPS team is on high alert to see if they can capture evidence that shores up the claims of those who’ve experienced hauntings at the Hall.

The episode is also the final one for investigators Amy Bruni, Adam Berry and Britt Griffith.